gsi_util: try to use executable in local bin/ folder

cmd_utils.run_command() will try to find the executable file
in the local bin/ folder firstly.

The patch also add some missing dependency files and make sure
gsi_util could run alone.

Bug: 75992357
Test: ./run_test.py
Test: './build.py setup_env',
  then './gsi_util.bin check_compat --system adb --vendor adb' in
  another terminal without lunch

Change-Id: I923eb68b4a6829c8ed5e5d8278e97fd4f5860efc
diff --git a/gsi/gsi_util/Android.bp b/gsi/gsi_util/Android.bp
index d1b1131..abc08f5 100644
--- a/gsi/gsi_util/Android.bp
+++ b/gsi/gsi_util/Android.bp
@@ -28,6 +28,7 @@
     "adb",
     "avbtool",
     "checkvintf",
+    "secilc",
     "simg2img",
   ],
   version: {